Re: hmm... an idea

[George Bonser]

On Sun, 5 Jul 1998, Paul Miller wrote:

> 
> I have 1 static IP and I'm thinking about getting an additional dynamic
> IP.  I'm not exactly sure on how DHCP works, but is there a way to have
> the my DNS server (on static IP) updated when the dynamic IP changes?
> 
> THanks
> -Paul

If you are wanting the host assigned by DHCP to be reachable from the
internet, yeah, you will need something to update your zone file and
restart DNS. There are several DYNDNS packages around, sign up for the
systalk mailing list at ml.org and make an inquiry there.


George Bonser

Microsoft! Which end of the stick do you want today?


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Re: hmm... an idea

[Paul Miller]

The IP changes every 24 hours.  hmm.. If the two hosts were in the same
domain, it shouldn't make a difference (except for secondary servers),
right?

My interest in doing this is that my ISP only charges additional baudwidth
for static IPs... so, I could have a large site on a dynamic IP and a
small DNS and mail server on the dynamic.

-Paul

On Mon, 6 Jul 1998, Tod Detre wrote:

> How dynamic is the ip? What I'm getting at is that it takes time to have a
> hostname propogate through the internet (sometimes up to a week). So if you 
> get
> this working, and if you're changing ip's every day then some computers on 
> the other side of the world may still point to an ip that has already changed 
> 5-7 times already. 
> 
> On Sun, Jul 05, 1998 at 06:42:07PM -0400, Paul Miller wrote:
> > On Sun, 5 Jul 1998, George Bonser wrote:
> > 
> > > On Sun, 5 Jul 1998, Paul Miller wrote:
> > > 
> > > > 
> > > > I have 1 static IP and I'm thinking about getting an additional dynamic
> > > > IP.  I'm not exactly sure on how DHCP works, but is there a way to have
> > > > the my DNS server (on static IP) updated when the dynamic IP changes?
> > > > 
> > > > THanks
> > > > -Paul
> > > 
> > > If you are wanting the host assigned by DHCP to be reachable from the
> > > internet, yeah, you will need something to update your zone file and
> > > restart DNS. There are several DYNDNS packages around, sign up for the
> > > systalk mailing list at ml.org and make an inquiry there.
> > 
> > Yeah.  hmm.. how will the dynamic computer know when its IP changes?  Is
> > it possible to run a script to notify the name server?
> > 
> > Thanks,
> > -Paul
> > 
> > 
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> 
> -- 
> Tod Detre |"If the women don't find you handsome, they should at
>   | least find you handy." -Red Green 
>   |"It is TOD not TODD! Do you see God spelling his name  
>   | Godd?" -Me
> 


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Re: hmm... an idea

[Tod Detre]

How dynamic is the ip? What I'm getting at is that it takes time to have a
hostname propogate through the internet (sometimes up to a week). So if you get
this working, and if you're changing ip's every day then some computers on the 
other side of the world may still point to an ip that has already changed 5-7 
times already. 

On Sun, Jul 05, 1998 at 06:42:07PM -0400, Paul Miller wrote:
> On Sun, 5 Jul 1998, George Bonser wrote:
> 
> > On Sun, 5 Jul 1998, Paul Miller wrote:
> > 
> > > 
> > > I have 1 static IP and I'm thinking about getting an additional dynamic
> > > IP.  I'm not exactly sure on how DHCP works, but is there a way to have
> > > the my DNS server (on static IP) updated when the dynamic IP changes?
> > > 
> > > THanks
> > > -Paul
> > 
> > If you are wanting the host assigned by DHCP to be reachable from the
> > internet, yeah, you will need something to update your zone file and
> > restart DNS. There are several DYNDNS packages around, sign up for the
> > systalk mailing list at ml.org and make an inquiry there.
> 
> Yeah.  hmm.. how will the dynamic computer know when its IP changes?  Is
> it possible to run a script to notify the name server?
> 
> Thanks,
> -Paul
> 
> 
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Tod Detre |"If the women don't find you handsome, they should at
  | least find you handy." -Red Green 
  |"It is TOD not TODD! Do you see God spelling his name  
  | Godd?" -Me


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Re: hmm... an idea

[Paul Miller]

On Sun, 5 Jul 1998, George Bonser wrote:

> On Sun, 5 Jul 1998, Paul Miller wrote:
> 
> > 
> > I have 1 static IP and I'm thinking about getting an additional dynamic
> > IP.  I'm not exactly sure on how DHCP works, but is there a way to have
> > the my DNS server (on static IP) updated when the dynamic IP changes?
> > 
> > THanks
> > -Paul
> 
> If you are wanting the host assigned by DHCP to be reachable from the
> internet, yeah, you will need something to update your zone file and
> restart DNS. There are several DYNDNS packages around, sign up for the
> systalk mailing list at ml.org and make an inquiry there.

Yeah.  hmm.. how will the dynamic computer know when its IP changes?  Is
it possible to run a script to notify the name server?

Thanks,
-Paul


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Re: hmm... an idea

[dreamwvr]

although i have not implemented it myself it is stock with the latest 
version of dns and bind for unix.  regards, [EMAIL PROTECTED]
At 05:52 AM 7/5/98 -0400, Paul Miller wrote:
>
>I have 1 static IP and I'm thinking about getting an additional dynamic
>IP.  I'm not exactly sure on how DHCP works, but is there a way to have
>the my DNS server (on static IP) updated when the dynamic IP changes?
>
>THanks
>-Paul
>
>-
>To unsubscribe from this list: send the line "unsubscribe linux-net" in
>the body of a message to [EMAIL PROTECTED]
>
>
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Featuring Website Development and Web Strategies of a TOP Developer 
 
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Re: hmm... an idea

[Glynn Clements]

Paul Miller wrote:

> I have 1 static IP and I'm thinking about getting an additional dynamic
> IP.  I'm not exactly sure on how DHCP works, but is there a way to have
> the my DNS server (on static IP) updated when the dynamic IP changes?

BIND 8.* introduces a dynamic update feature, which allows DNS
information to be updated whilst named is running.

See the BIND site (http://www.isc.org/bind.html) for more info.

-- 
Glynn Clements <[EMAIL PROTECTED]>


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RE: hmm... an idea

[Russell Berry]

have two sets of DNS files, named blah.org, and blah.dhcp, create links to them
with the real names, (named.hosts -> named.hosts.org).  have your call dhcp
with a script that removes the links, and links them to the appropriate files
and restarts named (ndc restart).

That's one way I suppose...

---russ

On 05-Jul-98 Paul Miller wrote:
> 
> I have 1 static IP and I'm thinking about getting an additional dynamic
> IP.  I'm not exactly sure on how DHCP works, but is there a way to have
> the my DNS server (on static IP) updated when the dynamic IP changes?
> 
> THanks
> -Paul
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-net" in
> the body of a message to [EMAIL PROTECTED]


Immortality -- a fate worse than death.
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hmm... an idea

[Paul Miller]

I have 1 static IP and I'm thinking about getting an additional dynamic
IP.  I'm not exactly sure on how DHCP works, but is there a way to have
the my DNS server (on static IP) updated when the dynamic IP changes?

THanks
-Paul


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